Kiss the Girls and Make Them Die (Se tutte le donne del mondo) (1966) [Gioia]: Strangled by a boa constrictor hidden inside a booby-trapped feather boa, given to her by Raf Vallone. (Thanks to Golgo13)

Confessions of a Police Captain (Confessione di un commissario di polizia al procuratore della repubblica) (1971) [Serena LiPuma]: Strangled with a towel by a hitman in her bathroom; her body is shown again afterwards in the cornerstone of a building before it's filled with cement. (Nudity alert: Topless) (Thanks to Golgo13 and Andrea)